Philips announced today that it launched an SDK and opened APIs to iOS developers who are interested in creating apps that work with its “Hue” personal wireless lighting system. The company started selling its smart, Internet-connected LED lighting system in October exclusively through the Apple Store.

Philips today, as promised, launches a software developer program for Hue that allows consumers to create and control their light bulbs using a smartphone or tablet. In publishing Hue’s open application programming interfaces (APIs), as well as releasing guides and libraries in an iOS software developer’s kit, Philips reinforces its commitment to helping the developer community start programming with Hue. This move opens the playing field for third party developers to create new, exciting applications using light, enabling Hue to communicate with a variety of devices and applications (apps). Philips Hue’s developer platform is available at developers.meetHue.com.

The Hue system allows iOS users to control lighting from their iPhones or iPads by enabling Hue bulbs to talk to iOS devices and one another using the ZigBee LightLink standard. The Hue app provides pre-programmed light settings for the bulbs, timers, and much more, but now developers will be able to create even more great apps that work with Hue.

Amazon just announced it would expand in-app purchasing to games on Mac, PC, and Web-based platforms, according to a press release, letting folks use their Amazon accounts to buy “virtual goods and currencies”.

Amazon’s customers can use any credit card, Amazon gift card, or Amazon credit when buying in-app items. The online retailer also offers its in-app purchasing API and services to Android and Kindle Fire, so developers from a variety of platforms can offer a “trusted and secure buying experience.”

When Amazon launched in-app purchasing for Android and Kindle fire last year, the company’s appstore director, Aaron Rubenson, explained it would take a 30-percent cut from transactions, similar to how Apple and Facebook does, but Amazon can also set pricing so developers can still receive 30 percent of the list price.

Amazon noted other benefits to today’s expansion include opening its fraud detection technology to developers, providing transaction and customer service support, and offering marketing options like in-app items available on Amazon.com via best seller lists, recommendations, campaigns, etc.